TV Size & Viewing Distance
Choose a TV size or enter your seating distance to explore a viewing setup. These are starting points you can adjust to your preferences.
iTechVora Tools
TV Size & Viewing Distance
Find a screen size or seating distance that fits your room.
Free · No signup · Calculations run in your browser
Ready to calculate
How to use
Choose “My TV size” to find a distance range, or “My viewing distance” to work backwards to a diagonal. Measure from your eyes to the screen and select feet or meters. Try the size presets to compare layouts.
Methodology
For diagonal D and aspect ratio a:b, screen width W = D × a / √(a² + b²), and height H = D × b / √(a² + b²). Distance = W / [2 × tan(θ/2)]. The inverse uses W = 2 × distance × tan(θ/2), then converts width back to diagonal.
Our editorial viewing-angle ranges are Comfortable 26–30°, Immersive 30–36°, and Cinema 36–40°. The starting point uses the midpoint angle. These labels are adjustable preference scenarios, not certified standards or a medical recommendation.
Worked example
A 65-inch 16:9 screen is approximately 56.65 inches wide and 31.87 inches tall. At 30–36°, its seating range is about 7.26–8.81 feet. The 33° starting point is about 7.97 feet.
Limits and sources
Resolution, eyesight, content and room layout affect your experience. Screen geometry does not change with 1080p, 4K or 8K, so resolution does not change this angle-based result. Sony discusses a separate resolution-based viewing-distance approach in its viewing-distance guidance. The diagram is a top view and scales down for unusually large distances.
FAQ
Does the screen size include the frame?
No. Check the manufacturer’s full dimensions when fitting a TV into furniture.
Must I buy the exact suggested diagonal?
No. Compare available retail sizes near the suggested range and try a comfortable viewing position.
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Methodology version 1 · Updated September 28, 2026.